If I remove the cat's, then what do i have to do so the check engine light won't come?

 

put tape over the light?

j/k



-lots of threads on this subject

 

Right, -tape it or bust the bulb out. Truck will run like crap as well, They're not tuned to run cat-less, not that you would give a hoot.

 

If your adamant about no cats/no tune then look up the Gotts O2 mod. Gotts O2 mod seems to work for pre '04 and not so much for '04 and up if I remember correctly.

 

A couple of FYI's

1. Removing the cats will really not gain much power.
2. Even though you are exempt from inspections, you are not exempt from the requirement to have them- even US Fish & Game Wardens carry a manual that identifies each vehicle and the required smog equipment, illegal engines changes, etc with pics of how to ID.
3. Any law enforcement officer (including fish & game), EPA inspector, etc. can impound the vehicle and cite it as a gross polluter
4. Once cited, a judge will decide if the vehicle is to be scrapped or returned to the owner- and you do not have any opportunity to speak in court- just required to sit 7 listen.
5. if the vehicle is returned- guess what, now you have to repair and take the vehicle to a federal referee station for the rest of "its life" for a smog inspection & test.

IMHO, it's not worth the risk versus the little gain.

 

The best thing to do is tune for it!

 

Turning the post cat O2 sensors off in your tune will set a P1000 "Not ready" code in your PCM. This code does not turn the CEL on, but what it does do is in some states that require emission testing this code will cause you to fail the inspection.

To avoid the P1000 code you will need either MIL Eliminators or the Gotts O2 mod. BTW, at least on the 97-03 F150s, Mustang MIL Eliminators work perfectly.

 

^ That depends on the tuner you bought...

 

Are you taking all 4 off? I took the rear 2 off and i have no engine lights on

 

^ He never said what year, so he may only have 2.